Repairs and diagnostics
Describe the loss of heat, weak cooling, unusual sound, or control problem. We evaluate the system and explain the work needed to address the findings.
HVAC repair
Serving Novato
One plan for heating and summer cooling
For a dependable heating and cooling service in Novato, residents trust Diamond HVAC Services Inc. We provide expert solutions to keep your home comfortable year-round, from summer heat to winter chill. Schedule your service with our expert team today!
Novato is in northern Marin, close to our Petaluma base. If the furnace still works but you want better cooling, describe the equipment you already have and the rooms that need help. Adding an air conditioner, replacing a complete system, and installing a ductless zone are different projects.
Our team serves your property from Petaluma. Meet Diamond HVAC and learn about our approach to heating, cooling, and ongoing equipment care.
How we can help
HVAC services in Novato
For a home office or a room used throughout the afternoon, tell us when temperatures rise and whether the rest of the house is comfortable. We can review airflow, controls, and system performance before treating every warm room as a reason to replace the whole unit.
Installation and replacement
Compare equipment with the rooms, distribution, placement, and supporting work included. Discuss both heating and cooling goals before settling on a system.
HVAC installationMaintenance and controls
Plan equipment care around the system and its instructions. Ask about filter care, thermostat use, and issues that need separate repair rather than routine maintenance.
HVAC maintenanceExplore options for your property
Request service in NovatoPlanning a visit
Tell us about the equipment and access
For a business, include opening hours and who handles building access. For a home, bring the equipment model and any history of repeat repairs. We can explain a repair scope separately from replacement options.
We explain the proposed scope before work begins. If you are planning an upgrade, ask about FTL Finance options, applicable equipment warranties, and what the installation includes. Availability and terms depend on the project and provider.
For recurring care, our Diamond Thermostat membership plans provide another way to discuss heating and cooling maintenance with the team.
Can I add cooling without automatically replacing all of my heating equipment?
Sometimes. The decision depends on compatibility, equipment condition, ducts, and the project goals. We can evaluate your Novato system and explain what could remain and what would need to change.
How do I request heating or cooling service in Novato?
Call (707) 762-7260 or use our contact form with the address, equipment type, and symptoms. Our Petaluma team will discuss the scope and confirm scheduling. A request does not automatically reserve an appointment.
More ways we can help
Air quality and specialty equipment
Our service range also includes the air distribution and specialty systems in your home. Identify the equipment and the concern when you request a visit so we can confirm the right scope.
- Air purifier installation
- Filter maintenance and replacement
- Duct cleaning
- Duct sanitizing
- Dryer vent cleaning
- Wine cooler maintenance and repair
- Sauna repairs and replacements
Browse our heating, furnace, and air conditioning services, or view the complete service directory.
Looking beyond Novato? See Marin County coverage and all areas we serve. We also accept requests across the North Bay, Napa County, and San Francisco.
Repairs · New systems · MaintenanceNeed a repair?
Need a repair?
Planning a new system?
Tell us what’s happening with your heating or cooling. We’ll help you understand the next step and put together a clear estimate.